Convert old -enable-kvm to kvm settings for Qemu

Fix #233

gns3server/modules/qemu/qemu_vm.py

@@ -43,9 +43,6 @@ import logging
 log = logging.getLogger(__name__)
 
 
-
-
-
 class QemuVM(BaseVM):
     module_name = 'qemu'
 
@@ -346,7 +343,6 @@ class QemuVM(BaseVM):
                                                                                      id=self._id,
                                                                                      mac_addr=mac_address))
 
-
     @property
     def legacy_networking(self):
         """
@@ -510,7 +506,11 @@ class QemuVM(BaseVM):
         log.info('QEMU VM "{name}" [{id}] has set the QEMU options to {options}'.format(name=self._name,
                                                                                         id=self._id,
                                                                                         options=options))
-        self._options = options
+        if "-enable-kvm" in options:
+            self.kvm = True
+            options = options.replace("-enable-kvm", "")
+
+        self._options = options.strip()
 
     @property
     def initrd(self):

tests/modules/qemu/test_qemu_vm.py

@@ -173,7 +173,7 @@ def test_set_qemu_path(vm, tmpdir, fake_qemu_binary):
     # Should not crash with unicode characters
     path = str(tmpdir / "\u62FF" / "qemu-system-mips")
 
-    os.makedirs( str(tmpdir / "\u62FF") )
+    os.makedirs(str(tmpdir / "\u62FF"))
 
     # Raise because file doesn't exists
     with pytest.raises(QemuError):
@@ -375,3 +375,17 @@ def test_hdd_disk_image(vm, tmpdir):
         assert vm.hdd_disk_image == "/tmp/test"
         vm.hdd_disk_image = "test"
         assert vm.hdd_disk_image == str(tmpdir / "QEMU" / "test")
+
+
+def test_options(vm):
+    vm.kvm = False
+    vm.options = "-usb"
+    assert vm.options == "-usb"
+    assert vm.kvm is False
+
+
+def test_options_kvm(vm):
+    vm.kvm = False
+    vm.options = "-usb -enable-kvm"
+    assert vm.options == "-usb"
+    assert vm.kvm is True